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Search took 0.00 seconds. Search: Posts Made By: tubman
Forum: Early V8 (1932-53) 11-27-2021, 11:33 AM
Replies: 20
Views: 2,294
Posted By tubman
Re: Oil pump pressure test

I believe that the O/P's original question has been lost in a discussion that, to me, boils down to the difference between a good stock rebuild and an all-out racing engine.

Assuming the O/P is...
Forum: Early V8 (1932-53) 11-26-2021, 09:10 PM
Replies: 20
Views: 2,294
Posted By tubman
Re: Oil pump pressure test

I have found that 10W30 will hold 25 psi hot idle and 55 psi going down the road in a properly rebuilt stock engine.
Forum: Early V8 (1932-53) 11-26-2021, 06:31 PM
Replies: 20
Views: 2,294
Posted By tubman
Re: Oil pump pressure test

Yep; I found that out the hard way. It was a useful exercise though. First, run a fresh rebuild with the Speedway pump and barely get 40 psi at speed. Then replace it with a tested, known good Ford...
Forum: Early V8 (1932-53) 11-26-2021, 10:54 AM
Replies: 20
Views: 2,294
Posted By tubman
Re: Oil pump pressure test

Although my sample size is smaller (5), this is what I have found as well. My experience with non-Ford pumps is also similar. I put a regular pump from Speedway Motors in my latest rebuild because,...
Forum: Early V8 (1932-53) 11-25-2021, 07:20 PM
Replies: 20
Views: 2,294
Posted By tubman
Re: Oil pump pressure test

I will admit that I know nothing about Melling high volume flathead pumps as I do not use them. I have to ask why you are stating 80 psi for a standard Ford 8BA pump? I don't have my manuals with me...
Forum: Early V8 (1932-53) 11-25-2021, 07:45 AM
Replies: 20
Views: 2,294
Posted By tubman
Re: Oil pump pressure test

8BA pumps have an internal relief valve, so if your fixture is set up right (to allow the relief someplace to go), it should max out at factory spec, which is around 55 PSI.
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